package com.wn.portal.controller;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.netflix.hystrix.contrib.javanica.conf.HystrixPropertiesManager;
import com.wn.portal.feign.MemberFeignClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author yellow Docter
 * @date 2022 -08-22
 * @desc
 */
@RestController
@RequestMapping("/hystrix")
public class PorTalHytixController {

    @Autowired
    private MemberFeignClient memberFeignClient;

    @GetMapping("/{mid}")
    public String findMemberById(@PathVariable String mid){
        String str = memberFeignClient.findMemberById(mid);
        return str;
    }

    //超时测试
    @GetMapping("/test/{mid}")
    public String findTimeOut(@PathVariable Integer mid){
        String str = memberFeignClient.findMemberTimeOut(mid);
        return str;
    }

    @GetMapping("find/{id}")
    @HystrixCommand(fallbackMethod = "errorFallback",commandProperties = {
            // 是否开启断路器
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_ENABLED,value = "true"),
            // 请求错误率大于 50% 就启动熔断器
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_ERROR_THRESHOLD_PERCENTAGE,value = "50"),
            // 默认10秒内访问接口失败达到20次，打开断路器，触发熔断； 为了方便测试，这里修改10秒内错误达到10次触发熔断。

            // 如果10s内访问20次 如果出现了10 次错误 开启 熔断
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_REQUEST_VOLUME_THRESHOLD,value = "10"),

            //断路多久以后开始尝试是否恢复，默认5s
            @HystrixProperty(name = HystrixPropertiesManager.CIRCUIT_BREAKER_SLEEP_WINDOW_IN_MILLISECONDS,value = "10000")
    })
    public String findMemberById(@PathVariable("id")Integer id) {
        if (id<0) {
            throw new RuntimeException("id不能为负数");
        }
        return Thread.currentThread().getName() + " 调用成功";
    }

    // 默认降级方法，返回string
    public String errorFallback(@PathVariable("mid")Integer mid){
        return "默认降级方法";
    }

}
